Can you ever prove something to be true through logic rather than evidence?

I see a lot of people trying to use logical arguments to try to prove something is true. A logically sound argument is logically sound. It doesn't mean that the argument is true. Can logic ever be used in its own to prove something is true? Or is logic just an excuse for when there is no evidence?

The theory of gravity has mostly been proven through logic. Until very recently, gravity "waves" were not measurable. (Light waves have been measured successfully however, as an example).

Logic indicated how gravity behaved, but it was unprovable until mathematicians could calculate the effects of gravity by observing how two objects related to each other. Then, as stated, a gravity 'particle' may have been discovered recently.

So, yes, some things can be 99% proven by logic. However, it is much easier to prove when a measuring stick can be applied.

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That's true. Are you an atheist, thiest or agnostic? The thing with proving God, is you have to prove it to yourself. It can't be proven generally. Well, it can, but we aren't smart enough to do that yet.

I'm an atheist agnostic, actually. How can you prove a supernatural entity to yourself? Are you capable of proving unicorns to yourself? What about alternative deities? Can you prove them to yourself as well? If so, do you believe everything?

How would I know that what I was experiencing was genuine and not a product of my imagination? How do you prove which deity it came from? You need a lot more than internal "proof" and subjectivity to demonstrate something is real.

The Father has a body like a man. He glows brighter than the sun. He is all powerful, all loving, and all knowing. Jesus is a separate being with the same attributes. The Holy Ghost is a spirit that guides us to do what's right.